housing problems after job loss Korea address registration foreigner Korea local office notices foreigners Korea ARC address change foreign resident tax Korea NHIS Korea foreign residents foreign resident bills Korea billing error foreigners Korea ARC bank account Korea address registration risk Korea HiKorea address report address change Korea healthcare Korea dependent insurance Korea foreign resident bills korea overpay insurance utilities korea fix billing health insurance bill Korea local office foreigners Korea mobile banking Korea insurance after unemployment Korea foreign resident fine korea foreign resident Korea health insurance foreigners korea national health insurance korea foreigners moving in Korea expat tax risk Korea address reporting korea foreigner job loss mistakes Korea foreigner bank account Korea foreigner Korean bank account living in Korea